Bernard, Chester I.
LPPM, 1982
Buku Teks
Bernard, Chester I.
Harvard University Press , 1948
Buku Teks
Bernard, Chester I.
Harvard University Press , 1966
Buku Teks
Safri Nurmantu
Midada Rahma Press, 2007
Buku Teks
Johnson, Rossall James, 1917-
South-Western Pub., 1970
Buku Teks